1057557670 has 32 divisors (see below), whose sum is σ = 2157936480. Its totient is φ = 369930240.

The previous prime is 1057557667. The next prime is 1057557679. The reversal of 1057557670 is 767557501.

It is a super-2 number, since 2×1057557670² = 2236856450751657800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057557679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211611 + ... + 216550.

It is an arithmetic number, because the mean of its divisors is an integer number (67435515).

Almost surely, 2^1057557670 is an apocalyptic number.

1057557670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1057557670 is an abundant number, since it is smaller than the sum of its proper divisors (1100378810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1057557670 is a wasteful number, since it uses less digits than its factorization.

1057557670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428200.

The product of its (nonzero) digits is 257250, while the sum is 43.

The square root of 1057557670 is about 32520.1117771757. Note that the first 3 decimals coincide. The cubic root of 1057557670 is about 1018.8291287101.

The spelling of 1057557670 in words is "one billion, fifty-seven million, five hundred fifty-seven thousand, six hundred seventy".